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EP0515705B1 - Frying pans - Google Patents

Frying pans Download PDF

Info

Publication number
EP0515705B1
EP0515705B1 EP91106998A EP91106998A EP0515705B1 EP 0515705 B1 EP0515705 B1 EP 0515705B1 EP 91106998 A EP91106998 A EP 91106998A EP 91106998 A EP91106998 A EP 91106998A EP 0515705 B1 EP0515705 B1 EP 0515705B1
Authority
EP
European Patent Office
Prior art keywords
pan
base
side wall
contact surface
undulations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91106998A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0515705A1 (en
Inventor
Stanley Kin Sui Cheng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meyer Manufacturing Co Ltd
Original Assignee
Meyer Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meyer Manufacturing Co Ltd filed Critical Meyer Manufacturing Co Ltd
Publication of EP0515705A1 publication Critical patent/EP0515705A1/en
Application granted granted Critical
Publication of EP0515705B1 publication Critical patent/EP0515705B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/04—Roasting apparatus with movably-mounted food supports or with movable heating implements; Spits
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/10—Frying pans, e.g. frying pans with integrated lids or basting devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay

Definitions

  • This invention relates to ovenware, and particularly to cooking pans which are to be used in circumstances where foodstuffs are likely to adhere to one or more surfaces thereon.
  • the invention has an immediately apparent application in pans which are to be heated on a stove, but is also suitable for ovenware.
  • Cooking utensils particularly for toasting and grilling, have also been designed with ribbed or uneven surfaces to maintain a piece of food spaced from the body of the utensil.
  • Examples of such utensils are disclosed in US-A-2,618,258 (Kroyer), which serves as the basis for the preamble of claim 1, US-A-2,875,683 (Burns); and GB-A-372,025 (Bells), GB-A-422,378 (Moneta) GB-A-742,484 (Knight), and CH-A-274,184 (Kroyer).
  • support for food in these utensils is often unsatisfactory, and they render the use of cooking implements on the surface rather difficult.
  • non-stick surfaces While the provision of "non-stick" surfaces is effective, such surfaces have a limited life. In normal use, it is almost inevitable that they will become scratched, and over a period of time, the surface will be broken, and partially or totally removed.
  • a cooking or frying pan comprising a base having an outer heat receiving surface and an inner or upper contact surface for engaging the food to be cooked, wherein the inner or upper contact surface is formed with undulations defining closely spaced peaks in a substantially common plane, the undulations forming a definable pattern, a non-stick material having been applied to the undulating surface, the base material at least in the region of the contact surface being anodized aluminium and characterized in that the pitch spacing of the undulations does not exceed 2mm.
  • the inner or upper surface of a pan which is to contact foodstuff being cooked is formed with undulations which form closely-spaced peaks which effectively reduce the area of contact respectively between the surface and the item being cooked, and between the surface and any cleaning implement or device.
  • undulations which form closely-spaced peaks which effectively reduce the area of contact respectively between the surface and the item being cooked, and between the surface and any cleaning implement or device.
  • the surface is covered with a PTFE non-stick surface and this provides the benefit that, firstly, any tendency of foodstuffs to adhere in the troughs of the corrugations is reduced, and the "non-stick" characteristics of the surface in the troughs is better preserved as cleaning tools and devices are unlikely to make contact therewith. Secondly, during cleaning, any scratching that is caused will be substantially restricted to the peaks of the corrugations, reducing the area of surface to which foodstuff is likely to adhere, even as the "non-stick" surface is eroded.
  • the base material is only progressively revealed as initially, only the "non-stick" material on the walls of the corrugations is exposed. If the primary material of the cooking pan base is of a particularly hard resilient material, then this erosion of the corrugations is very slow, and the useful life of cooking pan according to this embodiment of the invention can therefore be considerable.
  • pans according to the invention may be selected for the intended use of a pan.
  • a pan for use on an electric stove should normally have a substantially flat base for good conductive contact with a heating element, but for other uses irregular surfaces can be satisfactory.
  • the spacing of the peaks or corrugations formed in the cooking surface must be relatively close.
  • the suitable maximum pitch spacing is 2mm.
  • the peaks are no more than 1mm apart, preferably less.
  • the frying pan shown in Figure 1 is of conventional overall design and comprises a body 2 and a handle 4.
  • the body has a lower heat receiving surface (not visible), and an upper cooking surface 6.
  • the upper cooking surface 6 is formed with a plurality of closely spaced corrugations 8, shown more clearly in figures 2 and 3.
  • the pan body itself is normally made from a single piece of material, either cast or machined, and can be adapted for use either with open flame stoves (gas) or electric (unit or “smooth-top”) cookers where the underside of the pan will be machined flat to ensure good contact with the electric heat source.
  • the corrugations shown in Figure 2 are in the form of concentric circles, although any pattern may be adopted. Circular corrugations have the attraction of being easily machined into the surface of the pan and having no sharp bends therein. Straight corrugations can be adopted, particularly in square or rectangular pans.
  • a pan made of a suitable material and being formed with corrugations according to the invention offers substantial advantages over known flat surfaced pans. These benefits can be enhanced, however, by the application of a "non-stick" material to the corrugated surface.
  • the construction of a pan base according to the invention, and with such a surface, is shown in more detail in Figure 3.
  • the body of the pan is formed with surface corrugations 8. These can be ground or machined into the surface by conventional means, and the sharp corners at the peaks and troughs have been removed.
  • a continuous layer 10 of polytetrafluorethylene is then applied to the corrugated surface, also in a manner known per se . Again, these sharp corners at the peaks and troughs of the corrugations are removed such that the exposed cooking surface is relatively smooth.
  • the results of long use and abrasive cleaning is illustrated. As can be seen, the peaks of the two corrugations 8 a and 8 b have been worn away, but only the peak corrugation 8 b is worn away to such an extent that the base metal of the body 2 is exposed.
  • ⁇ means the creation of distinct spaced peaks and recesses, as against merely a key for the subsequent application of a "non-stick” surface.
  • the peak to valley spacing will be for example, of the order of 1 to 2mm, normally no more than 1.5mm, and the exposed "non-stick” surface can be substantially smooth.
  • the rough or corrugated surface can extend into and up the side wall or side walls of a cooking pan, and this will be a particular benefit in ovenware. While the invention has been particularly described in connection with a frying pan, it is readily adapted for use in other pans or indeed, any cooking utensil in which adherence of foodstuffs to a surface is a problem. For example, it may also be embodied in griddle pans which are a permanent component of a piece of cooking apparatus.
  • FIG 4 Another example is shown in Figure 4, where a saucepan or baking pan is provided with a cooking surface 6 having a pattern of corrugations in the form of a plurality of concentric circular grooves 12 superimposed on an overall pattern of grooves 14.
  • the side wall 16 of the pan is formed with straight corrugations 18.
  • a smooth annular area 20 is formed between the corrugations 16 and the grooves 12 and 14 at the junction between the side wall and the cooking surface.
  • This region is least subject to contact by cooking implements, and a smooth surface here is sufficient to minimize adherence of foodstuffs thereto. All the inner surfaces may be coated with a non-stick surface to achieve the additional benefits of the invention as described above.
  • the inclusion of a smooth annular region 20 can be incorporated in all embodiments of the invention between the contact surface 6 and a side wall of the pan.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Frying-Pans Or Fryers (AREA)
  • Cookers (AREA)
  • Baking, Grill, Roasting (AREA)
EP91106998A 1986-09-01 1987-08-18 Frying pans Expired - Lifetime EP0515705B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB08621120A GB2194879A (en) 1986-09-01 1986-09-01 Cooking pans
GB8621120 1986-09-01
EP87307307A EP0259056B1 (en) 1986-09-01 1987-08-18 Frying pans

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP87307307.6 Division 1987-08-18

Publications (2)

Publication Number Publication Date
EP0515705A1 EP0515705A1 (en) 1992-12-02
EP0515705B1 true EP0515705B1 (en) 1995-12-13

Family

ID=10603532

Family Applications (2)

Application Number Title Priority Date Filing Date
EP91106998A Expired - Lifetime EP0515705B1 (en) 1986-09-01 1987-08-18 Frying pans
EP87307307A Expired - Lifetime EP0259056B1 (en) 1986-09-01 1987-08-18 Frying pans

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP87307307A Expired - Lifetime EP0259056B1 (en) 1986-09-01 1987-08-18 Frying pans

Country Status (6)

Country Link
US (1) US4768427A (xx)
EP (2) EP0515705B1 (xx)
KR (1) KR920008546B1 (xx)
DE (2) DE3771811D1 (xx)
GB (1) GB2194879A (xx)
HK (1) HK100593A (xx)

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Also Published As

Publication number Publication date
KR880003599A (ko) 1988-05-28
US4768427A (en) 1988-09-06
KR920008546B1 (ko) 1992-10-01
DE3751636D1 (de) 1996-01-25
EP0259056A1 (en) 1988-03-09
GB8621120D0 (en) 1986-10-08
HK100593A (en) 1993-09-30
DE3751636T2 (de) 1996-05-02
EP0259056B1 (en) 1991-07-31
GB2194879A (en) 1988-03-23
DE3771811D1 (de) 1991-09-05
EP0515705A1 (en) 1992-12-02

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